Bafang PAS - Riding with another person

JR

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Aug 20, 2018
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Just a quick question for Bafang owners... The way I understand it is that the PAS levels are each set to give a fixed number of watts progressively rising from level 1 through 9. I also understand that you can use fewer levels and program you own power settings. So, how does this work to maintain safe and consistent space from other riders in a group ride? On a unassisted bike or a torque sense e-bike you just pedal a little easier or harder when necessary to keep the desired clearance but pedaling easier in PAS won't work since you still get the same motor output as long as you are pedaling. Do you stop pedaling to slow down? But then as soon as you resume you may be going too fast again. Do you shift PAS levels up and down? Seems like that might be too much of a change in most instances. Just curious. I just completed a build with a Tongsheng TSDZ2 with torque sense but am thinking of building another bike with Bafang BBSHD and want to better understand the riding dynamics.
 

jonathon

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Jun 21, 2018
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That's why I use my throttle, almost 100% of the time, it offers the finest modulations in power levels, combined with my pedaling, and also gives me the longest range. It seems like some think using the throttle means you don't pedal at all, I go through this all the time with my buddies who ride Haibikes and other factory built bikes. We argue back and forth about it, they think they are more efficient, range wise, but in practice I don't see it. I like being able to change my assist level, via throttle, second by second, instead of pushing buttons to change the displays PAS mode. I need to ride a torque assist bike sometime, never have....
 

southbiker

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Oct 21, 2018
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I have my PAS setup with constant power (the BBSxx can be set very differently however) with nine levels in a geometric progression (exponential). When riding with other folks and not leading, when we are on the flats it's easy enough to usually just toggle between levels infrequently to either slow down or speed up while following a safe distance - the step resolution is good for that. Often just pedaling harder or less in one level can handle maintaining pace.

If I am formation flying then throttle is the best option. Formation flying requires precision and constant fine tuning.
 
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